kless
メモ。こういった技術はすでに知られていて、いくつかツールがすでにあると書いてありますが、私は知らないなぁ。
The name is kless, and its goal is to be able to communicate using transport layer protocols (tcp/udp) without opening any ports ( at least on the server- side ) and still be able to talk transparently to a client. Even if this topic and probly the same technique are already known and a few tools already exists i've written a paper which explains the whole concept and further more extends it.